Reference:
Antti Ukkonen. Approximate top-k retrieval from hidden relations. CoRR, abs/1008.5057, 2010.
Suggested BibTeX entry:
@article{ukkonen10approximate, author = {Antti Ukkonen}, journal = {CoRR}, title = {Approximate Top-k Retrieval from Hidden Relations}, volume = {abs/1008.5057}, year = {2010}, }